SCI和EI收录∣中国化工学会会刊

›› 2015, Vol. 23 ›› Issue (9): 1469-1474.DOI: 10.1016/j.cjche.2015.06.011

• Catalysis, Kinetics and Reaction Engineering • Previous Articles     Next Articles

Production of glycerol carbonate via reactive distillation and extractive distillation: An experimental study

Huajun Wang1,2, Lei Pang1, Chao Yang1, Yihua Liu1   

  1. 1 Hubei Key Laboratory of Material Chemistry & Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
    2 Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2014-07-22 Revised:2015-02-04 Online:2015-10-24 Published:2015-09-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (21106050) and Specialized Research Fund for the Doctoral Program of Higher Education (20100142120066).

Production of glycerol carbonate via reactive distillation and extractive distillation: An experimental study

Huajun Wang1,2, Lei Pang1, Chao Yang1, Yihua Liu1   

  1. 1 Hubei Key Laboratory of Material Chemistry & Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
    2 Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • 通讯作者: Huajun Wang
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21106050) and Specialized Research Fund for the Doctoral Program of Higher Education (20100142120066).

Abstract: A process for the production of glycerol carbonate (GC) is proposed with the transesterification of glycerol (GL) and dimethyl carbonate (DMC)with CaO as catalyst by reactive distillation and extractive distillation. The performance of solvents in separating DMC-methanol azeotrope and the effects of operation parameters on the reactive distillation process are investigated experimentally. The results indicate that both the GL conversion and GC yield increase with the DMC/GL molar ratio, reflux ratio, final temperature of tower bottom, and CaO/GL molar ratio and decrease as the recycle number of CaO increases. The calciumconcentration in the residual reaction mixture also decreases remarkably as the DMC/GL molar ratio increases. At DMC/GL molar ratio 4.0, reflux ratio 1.0, final temperature of tower bottom 358 K, and CaO/GL molar ratio 0.05, both the GL conversion and GC yield can reach above 99.0%, and the mass concentration of calcium in the product is less than 0.08%.

Key words: Reactive distillation, Extractive distillation, Biodiesel, Catalyst, Glycerol, Glycerol carbonate

摘要: A process for the production of glycerol carbonate (GC) is proposed with the transesterification of glycerol (GL) and dimethyl carbonate (DMC)with CaO as catalyst by reactive distillation and extractive distillation. The performance of solvents in separating DMC-methanol azeotrope and the effects of operation parameters on the reactive distillation process are investigated experimentally. The results indicate that both the GL conversion and GC yield increase with the DMC/GL molar ratio, reflux ratio, final temperature of tower bottom, and CaO/GL molar ratio and decrease as the recycle number of CaO increases. The calciumconcentration in the residual reaction mixture also decreases remarkably as the DMC/GL molar ratio increases. At DMC/GL molar ratio 4.0, reflux ratio 1.0, final temperature of tower bottom 358 K, and CaO/GL molar ratio 0.05, both the GL conversion and GC yield can reach above 99.0%, and the mass concentration of calcium in the product is less than 0.08%.

关键词: Reactive distillation, Extractive distillation, Biodiesel, Catalyst, Glycerol, Glycerol carbonate